baber/WOPTO huggingface dataset:
Patent GB-757964-A (GB)
Title: Improved process for the regeneration of black liquor from wood pulping
IPC: D21C11/00
Filed: 1954-10-26
Abstract: Black liquor from the manufacture of wood pulp and containing sodium hydroxide, sodium sulphide, sodium sulphate, sodium carbonate and organic matter is regenerated for re-use by (a) oxidizing it in the liquid phase to destroy the organic matter and to convert the sodium salts to sulphate and carbonate, (b) adding lime to convert the sodium carbonate to sodium hydroxide, the precipitated calcium carbonate being filtered off, and (c) mixing with barium sulphide to convert the sodium sulphate to sodium sulphide, the precipitated barium sulphate being filtered off. The oxidation is carried out at temperatures above 250 DEG  C. with gaseous oxygen at a pressure sufficient to maintain the black liquor in a liquid phase, e.g. at 1800-2000 lbs./sq. in.; the reaction is exothermic and once started needs no further application of heat.  The regeneration process theoretically conserves all the sodium ions, but any small loss due to mechanical reasons may be made good by adding sodium sulphate or sodium carbonate prior to the treatment with lime, or by adding sodium sulphate prior to the treatment with barium sulphide.  The precipitated calcium carbonate may be burned to lime for re-use in the process, and the precipitated barium sulphate may be reduced to barium sulphide for re-use in the process by heating with carbon.  In an example, one gallon of a kraft waste liquor containing per litre 75 gms. of organic carbon, 6.1 gms. carbon dioxide, 57 gms. sodium hydroxide and 6.5 gms. sulphur was subjected to oxidation in liquid phase at 285-300 DEG  C. for 60 mins. at 1800 lbs./sq. in. pressure, whereby the organic carbon content was reduced to less than 5 gms. per litre.  The solution was concentrated to 1.4 litres and then contained per litre 150 gms. sodium carbonate, 70 gms. sodium sulphate and 12 gms. sodium acetate.  80 gms. calcium oxide was added per litre and the mixture heated to 85-90 DEG  C. with continuous vigorous stirring, the resulting precipitate being filtered and washed with 0.2 litre of hot water.  The combined filtrate and washings contained per litre 97 gms. sodium hydroxide, 11.5 gms. sodium carbonate, 66 gms. sodium sulphate and 11.4 gms. sodium acetate.  79 gms. barium sulphide were then added with vigorous agitation and the mixture heated to 95 DEG  C. for 30 mins. with continuous stirring.  The resulting precipitate being filtered and washed with 0.15 litre of hot water.  The combined filtrate and washings contained per litre 97 gms. sodium hydroxide, 11.5 gms. sodium carbonate, 2.2 gms. sodium sulphate, 35.8 gms. sodium sulphide and 11.4 gms. sodium acetate and was suitable for re-use in a sulphide cooking process. Specification 706,686 [Group III], is referred to.
Patent GB-665086-A (GB)
Title: Manufacture of 1.2-iminocyclohexanes
IPC: C07D203/26
Filed: 1949-12-02
Abstract: 1 : 2-Iminocyclohexanes of formula <FORM:0665086/IV (b)/1> where R is hydrogen, alkyl, cycloalkyl, aralkyl or aryl and the cyclohexane ring may be substituted by treatment of sulphuric acid esters of formula <FORM:0665086/IV (b)/2> with alkalis in an aqueous medium at a raised temperature.  The sulphuric acid esters, e.g. 2 - n - octylamino - and 2 - benzylamino - cyclohexanol sulphuric acid esters, may be prepared by sulphonation of the hydroxy amines, which may be obtained by treatment of a 2-halocyclohexanol with ammonia or amines.  In the examples (1-8) the sulphuric acid esters of the appropriate hydroxy amines are heated with, for example, aqueous caustic soda, to give 1 : 2 - iminocyclohexane, 4 - methyl1 : 2-iminocyclohexane, and the N-methyl-, N-n-propyl-, N-n-octyl-, N-cyclohexyl-, N-benzyl-, N - (p - methoxybenzyl) -, and N - phenyl-1 : 2-iminocyclohexanes.  The Specification as open to inspection under Sect. 91 comprises the additional statement that 1 : 2-iminocyclohexane may be N-alkylated or aralkylated and examples are given of the introduction in this way of N-benzyl, N-dodecyl, and N-b -hydroxyethyl (by the use of ethylene oxide) groups.  This subject-matter does not appear in the Specification as accepted.
Patent GB-301863-A (GB)
Title: Improvements in spigot-and-socket pipe joints
IPC: F16L13/12
Filed: 1928-10-25
Abstract: 301,863. Wallmann, C. Dec. 7, 1927, [Convention date]. Spigot-and-socket joints held by caulking and the like. - In a spigot-andsocket joint for pipes b, c, wherein fluid-tightness is secured by packing material d and a caulkedin lead ring e, and the socket a of the pipe b is of double-conical formation and is reinforced by a shrunk-on ring k, the mouth of the socket is provided with an outwardly bent lip h which facilitates the introduction of the sealing materials and also forms an external retaining channel i to receive a beaded edge of the reinforcing ring k. The socket a is slightly bulged at f in order to provide flexibility between the pipes prior to jointing.
Patent GB-1012340-A (GB)
Title: Improvements in or relating to processes and apparatus for the production of a fire polished glass strip
IPC: C03B18/06
Filed: 1962-08-13
Abstract: <PICT:1012340/C1/1> <PICT:1012340/C1/2> <PICT:1012340/C1/3> <PICT:1012340/C1/4> In producing a fire-polished glass strip by advancing a viscous glass strip, subjected to the upward thrust of a bath of a molten substance of greater density than the glass, in a direction parallel to the longitudinal axis of the bath and decreasing the temperature of the bath so that the fire-polished glass is cool enough at the end of the bath to be removed without damage, an adjustable pressure is applied on the strip on the bath by means of at least one roller, which does not stick to the glass, in contact with the whole width of the strip and which rotates so as to move the strip at an adjustable speed in the direction of advancement.  As shown in Figs. 1 and 3, molten glass 2 from a furnace 3 overflows a threshold 4, or may be passed between rollers and over a cooled table, and thence passes into a tank 5 to spread over a layer 8 of molten metal, or a halogen salt of an alkali metal or alkaline earth metal, which is denser than the glass, the layer 8 covering a refractory layer 7 and being heated by electric resistances 23 so that the strip 9 of glass is gradually cooled to a temperature at which it can be removed from the layer 8 by a bending roller 14 and passed on to rollers 15 in an annealing bath 16.  A series of carbon rollers 10 press the glass strip 9 to below the level of the bath 8, the first roller pressing deepest and the final rollers 28 merely passing the strip 9 over the surface.  Each roller 10 is individually driven from a motor 11 through a variable speed device 12, the peripheral speed being greater than the speed of the strip 9, and is adjustable in height relative to the bath in bearings 18 adjustable by screws 19. For molten metal baths, the atmosphere 22 is a non-oxidizing atmosphere.  In place of the direct drive for roller 10, pairs of small knurled rollers 25 (see Fig. 9) at each end rotate and set the height of the roller 10.  As shown in Fig. 7, the roller 10 may press the glass strip 9 against a solid member, which may be the base 26 of the tank 5 or may be a fixed roller.  In another embodiment, Fig. 8, not shown, the glass strip 9 is thinned by being raised locally above the level of the bath 8 by a carbon roller 101 (see Fig. 9) driven and located in height by knurled rollers 25.  As shown in Fig. 9, the strip 9 is both raised by roller 101 and pressed downwardly by a driven roller 10, a driven small roller 25 maintaining the roller 101 at the required height. Pairs of large rollers 10 may also press the strip 9 against a shaftless roller 101 or against a stationary roller.
Patent GB-776128-A (GB)
Title: Improvements in and relating to tanks
IPC: E03F7/10
Filed: 1955-11-01
Abstract: 776,128. Filters. GRAAFF, P. DE. Nov. 1, 1955, No. 31164/55. Class 46. [Also in Group XXVIII] A tank 10, e.g. a sludge-collecting tank for a gully-emptying device, has an inlet 2, a sieve wall 3 dividing the tank into a sludge compartment 1 and a water compartment 4, and domes 5 and 6 connected to a source of vacuum, dome 6 alone having a non-return valve 8. In operation, the vacuum serves to withdraw air exclusively, or nearly exclusively, from compartment 4, at first, the valve 8 being closed, or nearly so, and thus preventing or hindering withdrawal from compartment 1. The sludge/water mixture is thus drawn in at 2 and water is extracted through the sieve wall 3. When partial clogging of the sieve wall 3 occurs the valve 8 opens, or opens wider, air now being, or continuing to be, withdrawn from both compartments. When the clogging is complete, air is withdrawn from compartment 1 only and at this stage dome 5 may be connected to a pressure source whereby the sieve wall 3 will be cleared of sludge. When the resistance to flow of the conduit connecting dome 6 to the vacuum source is higher than that of the conduit connecting dome 5 to the vacuum source of the valve 8 may be dispensed with. Float valves 7 are provided.
Patent GB-756906-A (GB)
Title: Improvements in or relating to burners for gas-burning installations
IPC: F23D14/00
Filed: 1954-10-28
Abstract: 756,906. Gas burners. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Oct. 28, 1954 [Oct. 30, 1953], No. 31203/54. Class 75(1). A gas burner comprises a plurality of concentric rings 2, 3, 4 assembled so that they can expand and contract independently and arranged to form a plurality of concentric annular openings 6, 7, 8 through which a combustible mixture of gas and air is fed to a combustion chamber. The innermost annular opening 6 is formed between the innermost ring 4 and a central circular plate 5 on the end of an axial pin 11 extending through the burner and secured to the back plate 12 thereof preferably by a spring device allowing axial expansion of the assembly. The rings and the central plate 5 are supported on lugs 10 which extend either inwardly or outwardly from the rings and plate to engage the adjacent rings. The outermost ring is secured to the burner housing 1 in spaced relationship to a ceramic block 15 on the housing, the securing means preferably including a spring device. The width of the rings is at least four times that of the annular openings and the lengths in an axial direction of the rings increase towards the innermost ring. Secondary air may be supplied through an annular opening in the burner housing 1 surrounding the rings. In an alternative construction each ring is supported independently by ribs on a grid situated so far inside the burner housing that it is not affected by thermal stresses. Specification 656,233 is referred to.
Patent GB-1502247-A (GB)
Title: Seal device for steamers
IPC: D06B23/16
Filed: 1976-07-28
Abstract: 1502247 Seal device for fabric steamer SANDO IRON WORKS CO Ltd 28 July 1976 [28 July 1975] 31377/76 Heading D1L Seal device for fabric steamer comprises a pair of outer rubber seal rolls 5 and an inner pair of heat-resistant metal rolls 14, the two roll pairs defining therebetween a chamber into which air under pressure is introduced at 18 to prevent egress of steam from the steamer. The incoming air is directed by guide plates 19 against the nip of the seal rolls 5 and then towards the metal rolls 14, the air being discharged via ports 20. The seal rolls are sealed to the seal block 7 by metal rolls 6. The seal rolls are washed by water in reservoirs 9 and from sprays 11, water being removed by rolls 13 following brushing at 12. Water is removed from the chamber by bundles of glass fibres 19 and through vents 17.
Patent GB-909187-A (GB)
Title: Dip pipe assembly
IPC: B29C63/26
Filed: 1960-09-12
Abstract: A dip pipe assembly comprises a rigid tubular core having a lining and a jacket both of extruded sintered polytetrafluoroethylene, the core having a connecting flange at one end and a seal estalished between the lining and the jacket at the end opposite the flange to provide a continuous chemically inert cover for the core.  A core 10 (Fig. 1) has a jacket 25 which stops short of a flange 11, and a lining 26 which is flared outwardly over the gasket face of flange 11 as shown at 27.  The lower ends of the jacket and lining are sealed by an annular member 24 having an inner tubular wall 21 expanded against the lining, and an outer tubular wall 22 contracted against the jacket.  The member 24 is of inert material e.g. tantalum.  The dip pipe may be provided with a thermocouple soldered to the member 24, with leads 19 in an insulating sleeve 18 passing up between lining 26 and core 10 and through an aperture 14.  In the event of gas being trapped between the lining and the core this may escape through an aperture 13 and aperture 14; any gas between the jacket and the core escapes through <PICT:0909187/III/1> <PICT:0909187/III/2> <PICT:0909187/III/3> <PICT:0909187/III/4> apertures 15 and 16 and then through aperture 13 and 14.  To mount the dip pipe in a vessel wall it may be provided with a nozzle flange 28 having a tapered bore 29 lined with polytetrafluoroethylene 30, and fitted with a polytetrafluoroethylene gland 31 urged into position by a flange 32; brace straps 33 connect flange 28 to flange 11.  Other sealing means are shown in Fig. 3, where a lining 34 is folded back over jacket 25 and secured by an inert ring 36, e.g. of tantalum, in Fig. 4 where the lining 37 is folded back over the core 10 but under the jacket 38, and in Fig. 5 where jacket 39 and lining 40 extend beyond core 10 and are fused together.  If a thermocouple is required in the modification of Fig. 5 the sleeve containing the leads may be between the core and the jacket and pass through an aperture in the jacket, the aperture being sealed by a ring, e.g. of tantalum, with which the thermocouple is contacted.  In another modification of the assembly of Fig. 1, the jacket 25 is continued up to the rear face of flange 11 and provided with an outward flare clamped to the flange, and apertures 13 and 14 are replaced by boring through flange 11 and core 10, either radially or at an angle.
Patent GB-1261376-A (GB)
Title: Thermally operable switches
Inventor: PARKES ERIC BERNARD
IPC: H01H61/06
Filed: 1968-07-02
Abstract: 1,261,376. Thermal switches. JOSEPH LUCAS (INDUSTRIES) Ltd. 13 June, 1969 [2 July, 1968], No. 31454/68. Heading H1N. In a thermal switch having snap-blade 11, Fig. 2, operated by a thermally expansible strip 12, heated by a coil 17, an aluminium member 22, Fig. 6, is arranged between the coil 17 and strip 12 to store heat and thereby provide a time lag for the heating and cooling stages. The member 22 may be of channel or flat tubular section and may have a necked region 24 so that a portion of the coil 17 is adjacent the strip 12.
Patent GB-1438934-A (GB)
Title: Analysis of chemical compounds
IPC: G01N35/00
Filed: 1972-07-05
Abstract: 1438934 Analysis of chemical substances NATIONAL RESEARCH DEVELOPMENT CORP 13 Sept 1973 [5 July 1972] 31474/72 Heading G1B Apparatus for the analysis of a chemical substance, e.g. drugs and biological fluids such as urine, comprises filter paper 2 in the form of a roll, mounted on a pivot 3 attached to the bench 1, which is advanced along the upper surface of the bench by a pair of rollers 4, thin bore tubes 5 and 16 which act as pen to spread the samples and reagents respectively on the paper, heating elements 18 and 19 and a means 20 for examining the products of the reactions between samples and reagents. The tube 5 is fixed to a nut 6 on a rotatable screw-threaded bar 7 in brackets 8 and 9 attached to the bench 1, the bar being rotated using a belt drive 10 on to an electric motor 11, and switches 13 and 14 are placed in an electrical control circuit so as to change the direction of rotation of the bar 7 when either of them is operated.
Patent GB-1481602-A (GB)
Title: Pyridine derivatives
IPC: C07D213/74
Filed: 1974-07-16
Abstract: 1481602 Keto-esters derived from 2-amino-6- methylpyridine CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 16 July 1974 [17 July 1973] 31493/74 Heading C2C The invention comprises compounds of formula ZNHCH : C(COOR<SP>4</SP>)COCR<SP>1</SP>R<SP>2</SP>R<SP>3</SP> and their acid addition salts, wherein Z is 6-methyl- 2-pyridyl; R<SP>1</SP> and R<SP>2</SP> are each H, halogen, alkyl, aralkyl or cycloalkyl; R<SP>3</SP> is H, halogen or dialkylamino; and R<SP>4</SP> is alkyl. These compounds are prepared by reacting ZNH 2  with either (a) R<SP>5</SP>OCH : C(COOR<SP>4</SP>)COCR<SP>1</SP>R<SP>2</SP>R<SP>3</SP>, where R<SP>5</SP> is H or alkyl, or (b) HC(0-alkyl) 3 +
Patent GB-1400131-A (GB)
Title: Packaging coils of wire netting
IPC: B65D59/00
Filed: 1973-07-03
Abstract: 1400131 Protective end cores for wire netting coils BEKAERT SA NV 3 July 1973 31631/73 Heading B8C A wire netting coil 7, has a protective end cover 1 on each end, each of said end covers having at least one tongue 4, or 5 cut therefrom and entering the coil the tongue, or tongues, being sufficiently clamped by, or held in frictional engagement with, the coil material to serve alone to keep the end covers in place. As shown, in Fig. 2, two radial tongues 4, 5 are cut from a disc 1, made, e.g. of cardboard the tongues, which have their roots on a circle of a diameter equal to that of the hollow core 12 of the coil, being bent out about the lines 6 and pushed into the core 12 to cover the respective rough end of the coil 7. The resilient recovery factor of the tongues 4, 5 keeps the discs firmly in position on the ends of the coil. The tongues may have additional folds to aid their gripping within the core 12. Instead of gripping within the core 12 the tongues may engage between consecutive layers of the coil mesh. A disc, Fig. 5, has tongues which are formed by arcuate cuts 14, 15 of a diameter equal to the core diameter 12 and a diametral cut 16, and which are adapted to engage within the coil core 12. In an alternative arrangement the tongues extend diametrically from the outer edge of the disc and, when bent over, are adapted to be introduced between meshes adjacent the external surface of the coil. The disc, which may be formed of plastics, need not be flat but may be formed to fit the shape of the coil end. The discs can be fitted while the coils are being conveyed to a packing machine where the coils are wrapped in heat-shrinkable plastics material, and heated.
Patent GB-1137306-A (GB)
Title: Inoculum for poultry
IPC: C07K14/15
Filed: 1967-07-11
Abstract: 1,137,306. Poultry inoculum. RESEARCH CORP. 11 July, 1967 [11 July, 1966], No. 31762/67. Heading A5B. An inoculum, capable of inhibiting the hatching egg transmission of avian leucosis and chronic respiratory disease in poultry when administered to individual fowl in a poultry breeding flock, is prepared by isolating a disease-causing microorganism consisting of avian leucosis virus or M. gallisepticum and growing it in a nutrient medium therefor, inoculating a tissue cell culture medium containing actively growing embryonic avian kidney cells with a portion of the medium containing the microorganism, separating the resultant infected cells, and incubating a fresh batch of tissue cell culture medium containing actively growing embryonic avian kidney cells seeded with the infected cells. In one specific embodiment of the inoculum, the disease is chronic respiratory disease, the microorganism is M. gallisepticum and Ithe animal cells are 16-18 day old embryonic chick kidney cells. The microorganism may be isolated from the flock to be inoculated. The inoculum may be administered in repeated doses at intervals.
Patent GB-1256132-A (GB)
Title: Improvements in or relating to apparatus for testing vehicle suspension systems
Inventor: BENSON JOHN ALAN
IPC: G01M17/04
Filed: 1969-06-24
Abstract: 1,256,132. Testing vehicle suspensions. KISMET Ltd. 19 June, 1970 [24 June, 1969], No. 31795/69. Heading B7D. Apparatus for testing a vehicle suspension comprises a platform 12 which is raised by a pneumatic lifting device 13 to lift a vehicle wheel 11 to a predetermined height and is held at that height until a latch 14 is released, and recording apparatus 19 for indicating and recording the movement of the vehicle body or chassis on the suspension springing when the wheel 11 is allowed to drop from the predetermined height. The latch 14 has a roller 15 which is engaged with the underside of the platform 12 against an abutment 16 by spring loading 17 and is released by a foot plate 18. The recording apparatus 19 includes a stylus 21 carried by a member 20 which is moved vertically against downward spring loading 22 by a cord 23 extending over pulleys 24, 25 to an attachment plate 26 clamped to the vehicle body or chassis. The stylus 21 contacts a chart 27 mounted on a carriage (Fig. 2, not shown) which is moved horizontally by a spring when the wheel 11 is dropped.
Patent GB-1505992-A (GB)
Title: Means for handling vehicle-carrying pallets or like platforms
IPC: E04H6/18
Filed: 1975-07-17
Abstract: 1505992 Pallet-handling installations RUBERY OWEN HOLDINGS Ltd and ALLMANNA SVENSKA ELEKTRISKA AB 17 July 1975 [18 July 1974] 31809/74 Heading B8W Platforms 1 for transferring vehicles are received in a stack at a first station A which comprises conveyers 3 for feeding the stack to a second station B at which a spreader frame 8 raises the stack to permit the lowermost platform thereof to be disengaged and moved on to a third station C at which support pads for the particular vehicles to be loaded on to the platform are applied thereto, the platform then being moved on to a vehicle-loading station D at which a vehicle is driven on to the platform along a ramp 12. A vertically movable jig (not shown) at station D comprises upwardly projecting members which, on raising the jig, project through openings in the platform to receive and locate the vehicle wheels as it is being loaded on to the platform, so that on lowering the jig the vehicle chassis comes to rest on the support pads. The loaded platform then moves to a station E where it is raised by a spreader frame 14 to permit a further loaded platform to be subsequently placed under the raised platform to form a stack of two platforms which is then moved to a position F where it can be picked up for transfer to a ship, for example. Station C may be omitted, in which case the support pads are applied to a platform at station D. The entire apparatus may be carried by a mobile frame.
Patent GB-869831-A (GB)
Title: Vehicle mounted earth moving apparatus
IPC: E02F7/02
Filed: 1958-10-06
Abstract: 869,831. Shovelling machines; earth-moving machines. MOORE, E. M. Oct. 6, 1958, No. 31884/58. Class 68(1). [Also in Group XXX] Earth scooped up by a scraper blade or scoop 18, open at the rear, passes back through the scoop to fall on to an endless belt conveyer 14, the scoop being mounted on the forward end of the frame of the conveyer, which is so mounted on a mobile chassis that the leading end of the conveyer can be swung both vertically and horizontally. Material is discharged from the conveyer 14 on to a second conveyer 16 that extends transversely of the mobile chassis.